#include <stdio.h>

int main() {

    int userNum;
   // int userNumSquared;
    int userNumm = 3;

    scanf("%d", &userNum) == 1 
        ? printf("%d\n", userNum*userNum) 
        : (getchar() != '\n');


    //p.rintf("Squared: %d\n", scanf("%d", &userNum) ? userNum * userNum : 0);
    return 0;
}